const path = require('path')
const defaultSettings = require('./src/settings.js')

function resolve(dir) {
    return path.join(__dirname, dir)
}

const isDev = process.env.NODE_ENV === 'development'
const name = defaultSettings.title || '中台admin'

// 官方配置说明 https://cli.vuejs.org/zh/config/#vue-config-js
module.exports = {
    // 基本路径
    publicPath: '/',
    // 输出文件目录
    outputDir: 'dist',
    // assetsDir: 'static',
    lintOnSave: isDev,
    productionSourceMap: false,
    devServer: {
        // 自动启动浏览器
        open: true,
        port: 9000,
        // 浏览器弹出错误
        overlay: {
            warnings: false,
            errors: true
        },
        // 配置多个代理
        // detail: https://cli.vuejs.org/config/#devserver-proxy
        proxy: {
            ['^' + process.env.VUE_APP_BASE_API]: {
                target: 'http://localhost:9080',
                ws: true,
                changeOrigin: true
            },
            '^/upload': {
                target: 'http://localhost:9080',
                ws: true,
                changeOrigin: true
            },
            '^/images': {
                target: 'http://localhost:9080',
                ws: true,
                changeOrigin: true
            },
            '^/swagger': {
                target: 'http://localhost:9080',
                ws: true,
                changeOrigin: true
            }
        }
    },
    configureWebpack: {
        name: name,
        resolve: {
            alias: {
                '@': resolve('src')
            }
        },
        // 发布时关闭警告
        performance: {
            hints: false
        }
    },
    // webpack配置
    chainWebpack(config) {
        config.plugins.delete('prefetch')
        config.plugins.delete('preload')

        // config.when(isDev, config => config.devtool('cheap-source-map'))

        config.when(!isDev, config => {
            config
                .plugin('ScriptExtHtmlWebpackPlugin')
                .after('html')
                .use('script-ext-html-webpack-plugin', [{
                    // `runtime` must same as runtimeChunk name. default is `runtime`
                    inline: /runtime\..*\.js$/
                }])
                .end()
            config.optimization.splitChunks({
                chunks: 'all',
                cacheGroups: {
                    libs: {
                        name: 'chunk-libs',
                        test: /[\\/]node_modules[\\/]/,
                        priority: 10,
                        chunks: 'initial' // only package third parties that are initially dependent
                    },
                    elementUI: {
                        name: 'chunk-elementUI', // split elementUI into a single package
                        priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
                        test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
                    },
                    commons: {
                        name: 'chunk-commons',
                        test: resolve('src/components'), // can customize your rules
                        minChunks: 3, //  minimum common number
                        priority: 5,
                        reuseExistingChunk: true
                    }
                }
            })
            config.optimization.runtimeChunk('single')
        })
    }
}